Encyclopedia of Microtonal Music Theory

seventh / 7th / diatonic-7th

[Joe Monzo]

A diatonic interval which traverses 6 steps in a diatonic scale, and covers a pitch distance bounded by 7 nominals inclusively. This refers to the generic usage of "7th" without a qualifying adjective, which often precedes the interval name in standard diatonic usage. Thus, the various different types of diatonic 7ths are (in order of size from smallest to largest):

diminished-7th

minor-7th

major-7th

augmented-7th

. . . . . . . . .

The tonalsoft.com website is almost entirely the work of one person: me, Joe Monzo. Please reward me for my knowledge and effort by choosing your preferred level of financial support. Thank you.